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High energy efficiency power distribution method in distributed antenna system

A distributed antenna and distribution method technology, applied in the field of mobile communication, can solve the problems of low complexity and high complexity, and achieve the effects of low complexity, improved energy efficiency, and avoiding iterative calculations

Inactive Publication Date: 2017-08-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

In previous studies, the solution of the power allocation problem generally requires iterative calculations, and the complexity of the closed-form solution is very high. Therefore, it is urgent to develop a closed-form solution that can directly give a closed-form solution with low complexity. method

Method used

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  • High energy efficiency power distribution method in distributed antenna system
  • High energy efficiency power distribution method in distributed antenna system
  • High energy efficiency power distribution method in distributed antenna system

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Embodiment Construction

[0034] In order to clarify the technical scheme and technical purpose of the present invention, the present invention will be further introduced below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The hardware device involved in the present invention includes remote antennas distributed in different positions of the cell, a central processing unit (CPU, Central Processing Unit) connected to each remote antenna, and a mobile station (MS, Mobile Station) receiving service in the cell. In this implementation, as attached figure 2 As shown, there are N remote antennas scattered in the cell, denoted as RA i , i=1, . . . , N. Each remote antenna is equipped with 1 antenna and is connected to the central processing unit through a specific transmission channel. A mobile station (MS) within a cell has one or more antennas. define h i is the channel fading coefficient from the i-th remote antenna to the mobile station, defined is the ...

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Abstract

The invention provides a high energy efficiency power distribution method in a distributed antenna system. The method comprises the steps that the maximum energy efficiency of the distributed antenna system is used as the optimization target; the power of each remote antenna of the distributed antenna system is used as an optimization variable to construct an energy efficiency model; derivative analysis and classified discussion are used to select the number of remote antennas used for signal transmission; and classified discussion and the Lambert function are used to give the closed expression of power distribution. The method provided by the invention can effectively realize the optimal power distribution of each remote antenna, provides the closed solution to avoid iterative computation, and has the advantage of greatly reduced computational complexity compared with the existing method.

Description

technical field [0001] The invention belongs to the field of mobile communication, and relates to a resource allocation method of a mobile communication system, in particular to an energy-efficient power allocation method in a distributed antenna system. Background technique [0002] With the continuous development of the mobile communication system, the number of mobile users is increasing rapidly, and the user's requirements for the types of mobile communication services and communication quality are also constantly improving. Each operator is constantly increasing the coverage of the network, increasing the number and capacity of base stations. However, as more and more base stations are built, the energy consumed also increases exponentially. Facing the increasingly tense global energy situation, research institutions at home and abroad are constantly seeking transmission technologies with higher energy efficiency (EE, Energy Efficiency), and "green communication" has be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04B17/10H04W72/04
CPCH04B7/0426H04B17/102H04W72/0473Y02D30/70
Inventor 王郝虞湘宾文犇犇储君雅黎宁党小宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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